| // Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| /** |
| * @assertion String replaceFirstMapped(Pattern from, |
| * String replace(Match match), [int startIndex = 0]) |
| * Replace the first occurence of from in this string. |
| * |
| * Returns a new string, which is this string except that the first match of |
| * pattern, starting from startIndex, is replaced by the result of calling |
| * replace with the match object. |
| * @description Checks that this method replaces the first matched substring |
| * starting from the start. Test that RegEx can be used as from pattern |
| * @author sgrekhov@unipro.ru |
| */ |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| Expect.equals("1230", "1231".replaceFirstMapped(new RegExp("1"), |
| (m) => "0", 1)); |
| Expect.equals("12\w310", "12\w31\w".replaceFirstMapped(new RegExp("\w"), |
| (m) => "0", 3)); |
| Expect.equals(r"10\w31\w", r"12\w31\w".replaceFirstMapped(new RegExp(r"\w"), |
| (m) => "0", 1)); |
| Expect.equals("abc 1231-5", "abc 1231 5".replaceFirstMapped(new RegExp("\\s"), |
| (m) => "-", 4)); |
| } |
